1990 Johnson Evinrude 120 thru 140, 185 thru 225, 300 HP, P/N 507875, Page 274Get this manual
Disassembly 1Remove the propeller and mounting hardwareInspect the propeller for spun hubfJ1 2Drain the gearcase by first removing the oil level plugthen the oil filildrain plug You will find magnet attached to one of the plugsInspect this magnet for the presence of metal chipsIf you do find chips on the magnet, they must be steel and must have come from one of the gears, bearings, or shafts within the gearcase, so make note for future reference while inspecting the internal componentsThe plug with the magnet must be installed in its original positionAlso, inspect the lubricant for water or burned odorWater in the lubricant will give it milky appearanceOverheating will give the lubricant black color and burned odorf811gl 3The propeller shaft bearing housing is retained i.n the EJ gearcase by two screws, two washers, and two retamersThe retainers are behind the outer rim ofthe housing Remove the two screws and the retainers 4298